Structures of strontium selenite and strontium selenide aluminate sodalites and the relationship of framework structure to vibrational spectra in aluminate sodalites

Matthew E. Brenchley, Mark T. Weller

Research output: Contribution to journalArticlepeer-review

Abstract

The structures of both Sr[AlO]·(SeO) and its reduced product Sr[AlO]·(Se) have been determined using profile refinements of powder neutron diffraction data. Both crystallize with the simple body centered cubic sodalite structure with strontium showing a tetrahedral coordination around SeO/Se, and selenite showing 24-fold disordering giving rise to a partially occupied distorted cuboctahedron comprising 24 identical deformed SeO trigonal pyramids. The infrared spectra of aluminate sodalites as a function of cage dimensions are discussed.
Original languageEnglish
Pages (from-to)970-973
JournalChemistry of Materials
Volume5
Issue number7
DOIs
Publication statusPublished - 1993

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